摘要
在用降水量与作物需水量相比较来确定旱情的同时考虑当地的抗旱能力，引入了灌耕比的概念，结合ＮＯＡＡ／ＡＶＨＲＲ资料分析判断河北省夏季干旱的发生程度。应用此方法对１９９７年和１９９８年夏旱进行评定，结果与实际相符。
The precipitation amount comparing to water requirement of crops can be used to assesse the agricultural drought.Ratio of irrigated and tillable field area is used to evaluate the drought resistant abilities of regional farming.Both of them are combined with the NOAA/AVHRR data in ordar to estimate the summer drought damage to agriculture in Hebei provincial.It gave well results during the application in 1997 and 1998.
出处
《气象》
CSCD
北大核心
1999年第8期55-57,共3页
Meteorological Monthly
关键词
降水量
区域抗旱力
距平植被指数
干旱
precipitation amount ratio of irrigated and tillable field area summer drought resistant abilities NOAA/AVHRR data
